Provide type metadata for each Components/DataFormats

InputType/OutputType declaration and declarative Transformer/Validator has been added into camel-core
https://issues.jboss.org/browse/ENTESB-4572

Next step is to provide type metadata for each Components/DataFormats:

• Let components/DataFormats provide metadata about what data types are supported so that app developer can see
• Narrow down the possible data types (i.e. exclude unsupported types) and transformers when writing a route in IDE, allow IDE to show those candidates as a hint so that app developer can choose from
• Provide such facility from camel side so that the IDE can leverage it